Flying-machine



O. S. LIND.

FLYING MACHINE.

APPLICATION FILED SEPT. 10. 1918.

1,338,025. Patented Apr. 27, 1920.

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OTTO S. LIND, OF CHICAGO, ILLINOIS.

.FLYING-IMEACHINE.

Specification of Letters Patent.

Patented Apr. 2'7, 1920.

Application filed September 10, 1918. Serial No. 253,402.

To all whom it may concern Be it known that I, O'r'ro S. LIND, a citizenof the United States, and a resident of the city of Chicago, county ofCook, and State of Illinois, have invented certain new and usefulImprovements in F lying-Ma of which the following is a specification.

My invention relates to improvements in flying machines, and moreparticularly to improvements in the construction of the planes of suchmachines. The object of the invention is the production of an aeroplanewhich will be highly efficient in use and which will be stable and safein operation.

Other objects will appear hereinafter.

The invention consists in the combina tions and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which, t

Figure 1, is front elevation of a flying machine embodying theinvention,

Fig. 2, a top plan View of a portion of one of the planes of themachine,

Fig. 3, a section taken on line 33 of Fig. 2,

Fig. 4;, an enlarged section taken on line 4-4 of Fig. 2, and

Fig. 5, an enlarged detail section of a portion of the constructionshown in Fig. 3.

The preferred form of construction, as illustrated in the drawings,comprises a wheeled body. 6 with which two planes or wings 7 areconnected in a manner to permit of vertical oscillation thereof in muchthe same manner as the movement of the wings of a bird. Suitablepropelling means is provided in the body 6 for effecting the desiredoscillatory movement of the planes.

Each plane 7 is formed of a frame of lattice-work design, the framecomprising cross-bars 8 and longitudinal bars 9 rigidly connectedtogether as seen in the several views. Each of the bars 8 and 9 isformed with a depending medial flange 10, which, of course, lendsstrength and rigidity thereto, Each of the bars 8 is also formed at oneside with a channel 11, the channels 11 opening horizontally, that is,in the plane of the Wing, at one side of the corresponding rectangularopening 12, of which a plurality .is formed between the bars 8 and 9, asclearly seen in Fig. 2.

Cooperating with each of the openings 12 is a closure 13, one end ofwhich is securely held in the channel 11 of the corresponding bar- 8.The closure 13 is formed of suitable flexible m aterial, secured at itsforward edge, and is adapted to normally assume closed position, inwhich the edges thereof engage against the under sides of bars 8 and 9.The arrangement is such, however, that the closures 13 are adapted toflex downwardly, so that in the event of downward pressure thereon, thesame will yield to the dotted line position seen in Fig. 3 in order toallow for the passage of air through openings 12. At all other times,however, the closures 13 remain in closed position to prevent anypassage of air upardly through the plane. hen the clo sures 13 are inclosed position, the same are surrounded by the flanges 10, which form asort of seat or inclosure therefor, protecting the .a me and cooperatingtherewith in maintaining a tight connection.

Vdith the construction set forth it will be seen that in the operationof the flying machine, when the wings or planes are rocked upwardly, theclosures 13 will open to permit the passage of the air and exert aforward impulse on the machine due to the inclination of the closures13. Upon movement of the planes in the opposite direction, the closureswill automatically rock upwardly to closed position, in which event theplanes will be resisted by the air. thus effecting upward propulsion ofthe machine in much the same manner as a bird flies.

Also, with this arrangement many flying machine accidents will beavoided, inasmuch as such accidents most frequently occur because ofdownward air currents which unbalance the machine. With the arrangementset forth, however, any downward air currents impinging on the planes ofthe machine will have no effect thereon, inasmuch as the closure memberswill automatically flex downwardly to permit of the free passage of theair through the planes.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. 1, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications -as come within the scope of the appendedclaims.

Having described my invention, what I claim as new and desire to secureby Letters Patent is v 1. A plane" for flying machines comprising aforaminated frame formed of intersecting bars; an outwardly projectingreinforcing flange on each bar; and normally closed closures for theopenings in said frame secured to said bars and yieldable in only onedirection from the plane to allow for the passage of air, substantiallyas described.

2. A plane for flying machines, comprising a foraminated franie formedof intersecting bars; an outwardly projecting reinforcing flange on eachbar; and closures for the openings in said frame secured to said barsand yieldable in only one direction from the plane to allow for thepassage of air, substantially as described.

8. A plane for flying machines comprising a foraminated frame formed ofinterecting bars, each opening in said frame having a bar at one sidewith an inwardly opening channel, substantially as described.

-l. A plane for flying machines comprising a foraminated frame formed ofintersecting bars, each opening in said frame having a bar with aninwardly opening channel at one side; and a normally closed closure foreach opening secured at one end in the channel thereof and yieldableonly in one direction from the plane to allow for the passage of air,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

or'ro s. LINI).

Witnesses JOSHUA R. H. Porrs, EDWARD A. SCI-IIiJLE.

